Acta Crystallographica Section E

Structure Reports Online

Volume 69, Part 1 (January 2013)

organic compounds

Acta Cryst. (2013). E69, o23-o24    [ doi:10.1107/S1600536812049082 ]

Ethyl 27-oxo-15-oxa-2,20-diaza­hexa­cyclo­[,8.02,6.09,14.021,26]hepta­cosa-9,11,13,21,23,25-hexa­ene-7-carboxyl­ate

S. Narayanan, T. Srinivasan, S. Purushothaman, R. Raghunathan and D. Velmurugan

Abstract: In the title compound, C27H30N2O4, the pyrrolidine ring adopts a twisted conformation. The indoline ring system is almost perpendicular to the mean plane of the pyrrolidine ring, making a dihedral angle of 81.7 (8)°. In the crystal, mol­ecules are linked into centrosymmetric dimers with graph-set motif R22(16) via pairs of C-H...O hydrogen bonds. The terminal ethyl group of the ester group is disordered over two sets of sites, with a site-occupancy ratio of 0.587 (11):0.413 (11).

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